Last Modified: 08-30-2021 6.10:8.0.50 Doc ID: RM100000001X31R
Model Year Start: 2022 Model: Prius Prod Date Range: [06/2021 -           ]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING UNIT: REMOVAL; 2022 MY Prius [06/2021 -        ]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during air conditioning unit removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Lane departure alert system (w/ Steering Control)

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*1: When performing learning using the Techstream.

Click here 2019 - 2022 MY Prius [12/2018 -        ]; PARK ASSIST / MONITORING: INTELLIGENT CLEARANCE SONAR SYSTEM: CALIBRATION

Disconnect cable from negative auxiliary battery terminal

Memorize steering angle neutral point

Lane Tracing Assist System

2021 - 2022 MY Prius [07/2020 -        ]; PRE-COLLISION: PRE-COLLISION SYSTEM: INITIALIZATION

Intelligent clearance sonar system*1

Simple advanced parking guidance system*1

Pre-collision system

AFS (Adaptive Front-lighting System)

Initialize back door lock

Power door lock control system

2016 - 2022 MY Prius [11/2015 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: INITIALIZATION

  • No. 1 air conditioning radiator damper servo sub-assembly
  • No. 2 air conditioning radiator damper servo sub-assembly
  • No. 3 air conditioning radiator damper servo sub-assembly

Initialize servo motor (Air conditioning system)

DTCs are stored

2016 - 2022 MY Prius [11/2015 -        ]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: INITIALIZATION

PROCEDURE

1. PRECAUTION

NOTICE:

  • Make sure to select face mode before disconnecting the cable from the negative (-) auxiliary battery terminal.
  • Make sure to perform initialization after replacing the air conditioning radiator damper servo sub-assembly. If initialization is not performed, the air conditioner unit assembly will not perform properly as the air conditioning amplifier assembly will not be able to recognize the position of the air conditioning radiator damper sub-assembly.

2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM

for HFC-134a (R134a):

Click here 2016 - 2022 MY Prius [11/2015 -        ]; HEATING / AIR CONDITIONING: REFRIGERANT: REPLACEMENT+

for HFO-1234yf (R1234yf):

Click here 2021 - 2022 MY Prius [07/2020 -        ]; HEATING / AIR CONDITIONING: REFRIGERANT (for HFO-1234yf(R1234yf)): REPLACEMENT+

3. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY

Click here 2016 - 2022 MY Prius [11/2015 -        ]; WIPER / WASHER: FRONT WIPER MOTOR: REMOVAL

4. REMOVE NO. 1 HEATER AIR DUCT SPLASH SHIELD SEAL

Click here 2019 - 2022 MY Prius [12/2018 -        ]; FRONT SUSPENSION: FRONT SHOCK ABSORBER: REMOVAL+

5. REMOVE WATER GUARD PLATE LH

Click here 2019 - 2022 MY Prius [12/2018 -        ]; FRONT SUSPENSION: FRONT SHOCK ABSORBER: REMOVAL+

6. REMOVE COWL BODY MOUNTING REINFORCEMENT LH

Click here 2019 - 2022 MY Prius [12/2018 -        ]; FRONT SUSPENSION: FRONT SHOCK ABSORBER: REMOVAL+

7. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY

Click here 2019 - 2022 MY Prius [12/2018 -        ]; FRONT SUSPENSION: FRONT SHOCK ABSORBER: REMOVAL+

8. DISCONNECT OUTLET HEATER WATER HOSE A (w/o Exhaust Heat Recirculation System)

(a) Using pliers, grip the claws of the clip and slide the clip to disconnect the outlet heater water hose A.

NOTICE:

  • Do not apply excessive force to the outlet heater water hose A.
  • Prepare a drain pan or cloth in case the coolant leaks.

9. DISCONNECT WATER PIPE AND HOSE SUB-ASSEMBLY A (w/ Exhaust Heat Recirculation System)

(a) Using pliers, grip the claws of the clip and slide the clip to disconnect the water pipe and hose sub-assembly A.

NOTICE:

  • Do not apply excessive force to the water pipe and hose sub-assembly A.
  • Prepare a drain pan or cloth in case the coolant leaks.

10. DISCONNECT INLET HEATER WATER HOSE A

(a) w/o Exhaust Heat Recirculation System:

(1) Using pliers, grip the claws of the clip and slide the clip to disconnect the inlet heater water hose A.

NOTICE:

  • Do not apply excessive force to the inlet heater water hose A.
  • Prepare a drain pan or cloth in case the coolant leaks.

(b) w/ Exhaust Heat Recirculation System:

(1) Using pliers, grip the claws of the clip and slide the clip to disconnect the inlet heater water hose A.

NOTICE:

  • Do not apply excessive force to the inlet heater water hose A.
  • Prepare a drain pan or cloth in case the coolant leaks.

11. DISCONNECT SUCTION PIPE SUB-ASSEMBLY

(a) Remove the bolt and rotate the hook connector as shown in the illustration.

(b) Disconnect the suction pipe sub-assembly.

(c) Remove the O-ring from the suction pipe sub-assembly.

NOTICE:

Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.

12. DISCONNECT AIR CONDITIONER TUBE AND ACCESSORY ASSEMBLY

(a) Disconnect the air conditioner tube and accessory assembly.

(b) Remove the O-ring from the air conditioner tube and accessory assembly.

NOTICE:

Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.

13. REMOVE FRONT SEAT ASSEMBLY LH

for Manual seat:

Click here 2021 - 2022 MY Prius [07/2020 -        ]; SEAT: FRONT SEAT ASSEMBLY (for Manual Seat): REMOVAL

for Power seat:

Click here 2021 - 2022 MY Prius [07/2020 -        ]; SEAT: FRONT SEAT ASSEMBLY (for Power Seat): REMOVAL

14. REMOVE FRONT SEAT ASSEMBLY RH

HINT:

Use the same procedure as for the LH side.

Click here 2021 - 2022 MY Prius [07/2020 -        ]; SEAT: FRONT SEAT ASSEMBLY (for Manual Seat): REMOVAL

15. REMOVE LOWER INSTRUMENT PANEL SUB-ASSEMBLY

Click here 2021 - 2022 MY Prius [07/2020 -        ]; INTERIOR PANELS / TRIM: LOWER INSTRUMENT PANEL: REMOVAL

16. REMOVE STEERING COLUMN ASSEMBLY

Click here 2021 - 2022 MY Prius [07/2020 -        ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY: REMOVAL

17. REMOVE WINDSHIELD WIPER RELAY ASSEMBLY (w/ Rain Sensor)

Click here 2021 - 2022 MY Prius [07/2020 -        ]; WIPER / WASHER: WIPER ECU: REMOVAL+

18. REMOVE NO. 1 CLEARANCE WARNING BUZZER (w/ TOYOTA Parking Assist-sensor System)

Click here 2021 - 2022 MY Prius [07/2020 -        ]; PARK ASSIST / MONITORING: CLEARANCE WARNING BUZZER: REMOVAL+

19. REMOVE NO. 2 CLEARANCE WARNING BUZZER (w/ TOYOTA Parking Assist-sensor System)

Click here 2021 - 2022 MY Prius [07/2020 -        ]; PARK ASSIST / MONITORING: CLEARANCE WARNING BUZZER: REMOVAL+

20. REMOVE CLEARANCE WARNING ECU ASSEMBLY (w/ TOYOTA Parking Assist-sensor System)

Click here 2021 - 2022 MY Prius [07/2020 -        ]; PARK ASSIST / MONITORING: CLEARANCE WARNING ECU: REMOVAL+

21. REMOVE ECU INTEGRATION BOX RH

Click here 2021 - 2022 MY Prius [07/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL+

22. REMOVE SHIFT LOCK CONTROL UNIT ASSEMBLY

Click here 2021 - 2022 MY Prius [07/2020 -        ]; P610 (HYBRID TRANSMISSION / TRANSAXLE): SHIFT LEVER: REMOVAL+

23. REMOVE COOLER (ROOM TEMP. SENSOR) THERMISTOR

(a) Disconnect the connector and aspirator to remove the cooler (room temp. sensor) thermistor.

24. REMOVE FRONT NO. 1 CONSOLE BOX INSERT

(a) Disengage the clip and claw as shown in the illustration.

Place Hand Here

Remove in this Direction

(b) Disengage the guide to remove the front No. 1 console box insert as shown in the illustration.

Remove in this Direction

25. REMOVE FRONT NO. 2 CONSOLE BOX INSERT

(a) Disengage the clip and claw as shown in the illustration.

Place Hand Here

Remove in this Direction

(b) Disengage the guide to remove the front No. 2 console box insert as shown in the illustration.

Remove in this Direction

26. REMOVE REAR NO. 3 AIR DUCT

(a) Remove the 2 front floor carpet clips.

(b) Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.

(c) Disengage the 2 claws to remove the rear No. 3 air duct as shown in the illustration.

Remove in this Direction

27. REMOVE REAR NO. 2 AIR DUCT

(a) Disengage the 2 claws and remove the rear No. 2 air duct.

28. REMOVE REAR NO. 5 AIR DUCT

(a) Remove the 2 front floor carpet clips.

(b) Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.

(c) Disengage the 2 claws to remove the rear No. 5 air duct as shown in the illustration.

Remove in this Direction

29. REMOVE REAR NO. 4 AIR DUCT

(a) Disengage the 2 claws and remove the rear No. 4 air duct.

30. REMOVE REAR NO. 1 AIR DUCT

(a) Disengage the 4 claws to remove the rear No. 1 air duct.

31. REMOVE NO. 3 DASH PANEL INSULATOR PAD

(a) Cut each claw of the 2 clips and remove the No. 3 dash panel insulator pad.

NOTICE:

If the No. 3 dash panel insulator pad is damaged, replace it with a new one.

*a

Cut

(b) Remove the 2 clips.

32. REMOVE NO. 2 INSTRUMENT PANEL BRACKET (for 11.6 Inch Display)

(a) Remove the 2 bolts.

(b) Disengage the guide and remove the No. 2 instrument panel bracket.

33. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY

(a) Turn back the front floor mat as shown in the illustration.

(b) Disengage each clamp.

(c) Remove the bolt and disconnect the earth wire.

(d) Remove the bolt, screw, nut and No. 1 instrument panel brace sub-assembly.

Bolt

Screw

Nut

34. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY

(a) Turn back the front floor mat as shown in the illustration.

(b) Disengage each clamp.

(c) Remove the bolt, screw, nut and No. 2 instrument panel brace sub-assembly.

Bolt

Screw

Nut

35. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY

(a) Disengage the clamp and 2 claws to disconnect the DLC3 connector.

Bolt

Nut

(b) Remove the bolt, nut and No. 3 instrument panel to cowl brace sub-assembly.

36. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU

Click here 2021 - 2022 MY Prius [07/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL+

37. REMOVE LOWER DEFROSTER NOZZLE ASSEMBLY

(a) Disengage the 6 claws to remove the lower defroster nozzle assembly.

38. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY WITH AIR CONDITIONER UNIT ASSEMBLY

NOTICE:

  • Be sure to support the air conditioner unit assembly when removing it. Failure to do so may cause the bracket of the air conditioner unit assembly to break.
  • When disassembling the air conditioner unit assembly, eliminate static electricity by touching the vehicle body to prevent the components from being damaged.

(a) Disconnect each connector.

*a

Earth Wire

*b

Relay Block Assembly

Connector

Bolt

(b) Remove the 3 bolts and disconnect the 3 earth wires.

(c) Remove the bolt and disconnect the relay block assembly.

(d) Disengage each clamp and disconnect the instrument panel wire.

(e) Disconnect the drain cooler hose.

NOTICE:

If the cooler unit drain hose grommet is disconnected from the vehicle body while disconnecting the drain cooler hose, make sure to replace it with a new one. Failure to do so may cause water ingress.

*1

COOLER UNIT DRAIN HOSE GROMMET

(f) Remove the 2 bolts.

(g) Remove the 4 bolts (A).

Bolt (A)

Bolt (B)

Nut

-

-

(h) Remove the bolt (B) and disconnect the parking brake pedal assembly.

(i) Remove the nut.

(j) Disconnect each connector.

Remove in this Direction

-

-

(k) Remove the instrument panel reinforcement assembly with air conditioner unit assembly as shown in the illustration.

(l) Disengage the claw and 2 guides and disconnect the ID code box (immobiliser code ECU) as shown in the illustration.

Remove in this Direction

39. REMOVE AIR CONDITIONER UNIT ASSEMBLY

(a) Remove the 3 bolts and air conditioner unit assembly from the instrument panel reinforcement assembly.